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REX E LOESBY PE 3037719632 P. 04 <br />• • <br />fuel tank and asemi-trailer mounted diesel-electric generator on the site. No significant <br />additions to facilities or roadways are envisioned for Sierra's operations. Sierra may elect to <br />move the generator trailer from its current location on the surface to a location underground. All <br />of these components are shown on Exhibit E: Mining Plan Map. <br />During spring runoff periods, excess water seeps and drains into the quarry tiom cracks <br />in the mazblc formation. Phis water is of high quality and is pumped out of the quarry during the <br />spring runoff season at a rate that has never exceeded 33 gallons per minute (accordutg to <br />CYMC discharge records filed with the state). Water is stored underground in settling ponds and <br />is used in the stone cutting operations for dust control and cooling. Excess water is pumped to <br />Yule Creek at a point directly east of Quarry Entry No. 3. A 1.5 inch plastic pipe has been ]aid <br />from $ntry No. 3 for dewatering. This pipe will be buried. Continuous 24 hour Pumping <br />volumes will not exceed 33 gallons per minute. <br />Siena plans to allow public aceess to the quarry entries during operations, when such <br />access will not endanger quarry personnel or the public, and if the access trafl is open to the <br />public. Sierra will take appropriate measures to protect both quarry personnel and the public. <br />Such measures will include fencing around the active waste dump areas, temporary or permanent <br />fences in the quarry entries, and warning signs end fences to discourage public access to unsafe <br />areas. Portions of the fencing irutalled by the CDMG's 1MP program remain. However, Sierra <br />will install temporary fencing (chain link as well as split rail with wire) in some areas. The total <br />amount of temporary fencing is estimated et a maximum of 500 lineal feet. These temporary <br />fences will be removed and some will be replaced with permanent fencing as described in <br />Exhibit D -Reclamation Plan. <br />fft Surface Disturbance: The azea disturbed from past operations within the affected <br />area is estimated at approximately 4.0 acres. This area includes the existing waste piles, the <br />entries, and the access road to the south of Entry No. 3 leading to the area directly to the east of <br />the No. 5 Prospect Tunnel. For en operation lasting 20 years at an average envisioned <br />production rate of 10,000 tons per year, a maximum of approximately 200,000 cubic yards of <br />waste rock will be generated and added to the waste piles. The surface area added to the existing <br />waste piles is estimated at approximately three acres. The approximate final limits of the waste <br />piles is shown on Exhibit E -Reclamation Plan Map, and the existing and fatal topography is <br />shown on Exhibit D -Reclamation Plan (Paragraph 11b"). <br />f el Roads: 'T'here are no improvements or new roads envisioned for access to the <br />affected area. Access is via 3 miles of public road from the Town of Marble, then via 1800 feet <br />of private road on Sierra controlled private property to the northern edge of the affected area. <br />Access roads on site already exist from prior operations. These roads lie exclusively on the <br />waste rnazblc piles and are shown on Exhibit E -Mining Plan Map. No significant new roads ere <br />envisioned, although existing roads may be relocated slightly or extended es waste is added to <br />the piles. During the summer of 1998, CYMC constructed a new road around the east side of the <br />south waste pile arcs. The surface of the road was not adequately stahitized before the winter of <br />